As the networking and autonomous driving capabilities of vehicles continue to evolve, the need for robust embedded IT security in automotive communications becomes more critical than ever. Infineon Technologies has partnered with ESCRYPT to develop advanced automotive network security solutions that secure in-vehicle communication through encryption. This collaboration not only addresses current security challenges but also prepares for future threats, ensuring long-term protection.
The solution integrates Infineon’s second-generation AURIX (TC3xx) multi-core microcontroller family with ESCRYPT’s CycurHSM security software, which is specifically optimized for automotive environments. This combination delivers a powerful hardware-software synergy that enhances the security of electronic control units (ECUs). Today, there are over 60 ECUs in a typical vehicle, all communicating with one another, making them potential targets for cyberattacks.
By embedding security directly into the hardware, this solution makes ECUs more resistant to tampering. The integrated hardware security module (HSM) within each TC3xx microcontroller ensures that safety-critical functions are isolated from general operations. This allows the main controller to focus entirely on its primary tasks while the HSM handles security-related processes like secure boot, flash memory access, and debug operations.
Compared to purely software-based solutions, this hardware-assisted approach offers significant performance improvements. It simplifies implementation for ECU manufacturers, ensuring compliance with AUTOSAR standards without requiring additional security features. The CycurHSM software can be easily configured, providing flexibility and reducing development time.
This turnkey solution cuts development costs for in-vehicle communication security by up to 90%, enabling system developers to focus more on creating high-end applications for emerging technologies such as over-the-air (OTA) updates and autonomous driving.
The AURIX microcontroller family plays a central role in automotive embedded security, managing communication protocols, monitoring, and security operations. Key generation and storage take place within the HSM, and secure boot, flash memory, and debug functions are all supported by it.
The HSM supports both symmetric and asymmetric encryption algorithms, including AES-128, ECC 256, and SHA2, enhancing resistance to tampering during in-vehicle data transmission. It also prevents unauthorized software updates and malware injection, further strengthening the system's integrity.
ESCRYPT, a global leader in embedded security software, provides tailored stacks for AURIX and HSM. Their CycurHSM software enables hardware-based security features such as data encryption, authentication, and the use of a True Random Number Generator (TRNG) for enhanced randomness in cryptographic operations. It also includes features like execution time manipulation detection, which helps verify the authenticity of applications during runtime.
Thomas Boehm, Senior Associate at Infineon’s Automotive Chassis and ADAS Microcontrollers Division, emphasized: “AURIX microcontrollers are essential components for modern and future vehicles. Combining AURIX with CycurHSM ensures even greater IT security, helping system suppliers complete their development tasks more efficiently.â€
Frederic Stumpf, Director of Product Management at ESCRYPT, added: “Optimal IT security is a must for self-driving and connected cars. By combining top-tier hardware platforms like AURIX with advanced HSM software, we are delivering cutting-edge solutions that meet today’s needs and prepare for the future. Our partnership with Infineon demonstrates that car safety must be developed collaboratively to achieve the best results.â€
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